Evidence for the Ground-State Resonance of O-26
Evidence for the ground state of the neutron-unbound nucleus O-26 was observed for the first time in the single proton-knockout reaction from a 82 MeV/u F-27 beam. Neutrons were measured in coincidence with O-24 fragments. O-26 was determined to be unbound by 150(-150)(+50) keV from the observation of low-energy neutrons. This result agrees with recent shell-model calculations based on microscopic two- and three-nucleon forces.
Lunderberg, E., Paul A. DeYoung, Z. Kohley, H. Attanayake, T. Baumann, D. Bazin, G. Christian, D. Divaratne, S. M. Grimes, A. Haagsma, J. E. Finck, N. Frank, B. Luther, S. Mosby, T. Nagi, Graham F. Peaslee, A. Schiller, J. Snyder, A. Spyrou, M. J. Strongman and M. Thoennessen. "Evidence for the Ground-State Resonance of O-26." Physical Review Letters 108, no. 14 (2012).